Dale Earnhardt Jr. (88) was one of 24 cars involved in a pileup on the last lap at Talladega. Earnhardt, who had sustained a concussion in August, had his symptoms crop up again after being involved in this wreck and now won't race at Charlotte or Kansas as a result. (Butch Dill/AP)

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Blur of speed

A pack of cars race through the tri-oval during the early part of Sunday's Good Sam Roadside Assistance 500 Sprint Cup race. (Rainier Ehrhardt/AP)

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Getting ready

Kasey Kahne, right, and Ryan Newman prepare to take off at the start of Sunday's race. Kahne was on the pole while Newman was on the outside of the front row. (John Harrelson/NASCAR Media)

Kurt Busch drives away from a safety crew after wrecking during the race. Busch was later ordered to stop for ignoring safety orders and was parked for the remainder of the race. (Greg McWilliams/AP)

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Spin room

Kurt Busch speaks to the media after his incident. Sunday was his last race with Phoenix Racing. He'll drive for Furniture Row Racing starting next week. (Sean Gardner/NASCAR Media)

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Up and over

Tony Stewart's car flips as Clint Bowyer a host of other drivers get caught up in a huge last-lap crash. Twenty-four cars in all were involved in the wreck. (Greg McWilliams/AP)

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Long view

Fans perched atop campers have a front-row seat to the crash. (Greg McWilliams/AP)

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Dirt racing

Jamie McMurray was leading the race just a few laps before the big wreck, but he was spun out and ran into the grass. McMurray avoided damage to his car but missed out on a chance to win. (Rainier Ehrhardt/AP)

Jimmie Johnson's car was in no condition to go anywhere, so Johnson decided to ride with teammate Dale Earnhardt Jr. after the race. (Tom Pennington/AP)

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Finished

Jimmie Johnson's car, like so many involved in the last-lap wreck, was in pretty bad shape afterward. (Russell LaBounty/Autostock/AP)

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Green-white-yellow-checkered

Matt Kenseth could see the caution flag and the checkered flag as he hits the finish line on the last lap of the Good Sam Roadside Assistance 500. (Tom Pennington/NASCAR Media)

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Time to celebrate

While so many other cars were wrecked or torn up following the last-lap incident, Matt Kenseth was eager to grab the checkered flag and start celebrating. (Russell LaBounty/Autostock/AP)

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The winner

Matt Kenseth celebrates in victory lane after winning the Good Sam Roadside Assistance 500 race. It was Kenseth's second win of the season. His other win came in the Daytona 500. (Sean Gardner/NASCAR Media)